fixed pkgbuild bug

vpn-manager-globalprotect-git/PKGBUILD

@@ -19,8 +19,12 @@ pkgver() {
 	printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
 }
 
+prepare() {
+	git -C "${startdir}/${_pkgname}" clean -dfx
+}
+
 build() {
-	cd "${srcdir}/globalprotect-backend"
+	cd "${_pkgname}"
 	python -m build --wheel --no-isolation
 }